S-91781A291 12-24 x 1/2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws
Stainless Steel Slotted Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Reliable high-strength performance delivering 80,000 psi tensile strength and Rockwell B80 hardness for demanding applications
- Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
- Full threading design provides maximum grip length and uniform load distribution across the entire fastener
- Standard 82° countersink angle enables flush mounting for clean, professional finishes in assembled products
- Compliance with ASME B18.6.3 specifications guarantees dimensional accuracy and interchangeability
- Environmentally responsible manufacturing meeting RoHS 3 and REACH standards for sustainable procurement
Professional Applications & Engineering Value
These 12-24 UNC flat head slotted screws deliver exceptional engineering value in applications where corrosion resistance, strength, and precise flush mounting are critical. The 18-8 stainless steel material combined with passivated finish provides superior protection against oxidation and chemical exposure, making them ideal for marine equipment, food processing machinery, and outdoor industrial applications. The coarse UNC thread pattern with Class 2A fit ensures rapid installation and reliable performance in materials where fine threads might strip or fail. The flat head design with standard 82° countersink angle solves the common engineering challenge of creating smooth, unobstructed surfaces while maintaining structural integrity under 80,000 psi tensile loads.
Specification Summary & Compliance
This fully threaded flat head screw features precise 12-24 UNC coarse threads with Class 2A thread fit tolerance for consistent performance. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy across all critical parameters including head diameter (0.412"), length (1/2"), and thread diameter (0.216"). The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for environmental safety and restricted substance management.
